/Engine/Plugins/Experimental/PlanarCutPlugin/Source/PlanarCut/Public/PlanarCut.h
Scatter additional vertices (w/ no associated triangle) as needed to satisfy minimum point spacingIndexof first transform group w/ updated geometry. (To update geometry we delete and re-add, because geometry collection isn't designed for in-place updates)
int32 AddCollisionSampleVertices ( double TargetSpacing, [FGeometryCollection](API\Runtime\Chaos\GeometryCollection\FGeometryCollection) & Collection, const [TArrayView](API\Runtime\Core\Containers\TArrayView)< const int32 > & TransformIndices )